Automatic double flash-light apparatus.



F. J. H. RUSTIGE.

AUTOMATIC DOUBLE FLASH LIGHT APPARATUS.

APPLICATION FILED FEB. 21, 19M.

Patented July 13, 1915.

2 SHEETS-SHEET lw/r/vssms:

F. J. H. RUSTIGE.

AUTOMATlC DOUBLE FLASH LIGHT APPARATUS.

APPLICATION FILED FEB-21,1914.

1,146,453; Patented July 13, 1915.

2 SHEETSSHEET 2.

lrT y FRANS JOE-IAN HENRIK RU STIGE,

0F STOCKI-IOLIVI, SWEDEN, ASSIGNOR TO AK'IIE- BOLAGET LUX, OF STOCKHOLM, SWEDEN, A COMPANY LIMITED.

AUTOMATIC DOUBLE FLASH-LIGHT APPARATUS.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed February 21, 1914. Serial No. 820,164.

To (ZZZ whom it may concern Be it known that I, FRANs JoHAN HENRI]; Rusrien, a subject of the King of Sweden, residing at Lilla Essingen, Stockholm, Sweden, have invented new and useful Improvements in and Relating to Automatic Double Flash-Light Apparatus, of which the following is a specification.

In automatic intermittent light apparatus it is often desirable to produce otherseries of light flashes than those generally referred to as simple series, viz. consisting of a short signal of light accompanied by a dark period of more or less duration.

The present invention relates to an arrangement in automatic flash light apparatus which enables the flashes of light to be arranged in a plurality of series, so that after a comparatively long dark period two or more successive flashes withlike or unlike short dark periods can be obtained.

The arrangement consists substantially of an air space in connection with the movable wall or diaphragm of the flash light apparatus, the communication between said air space and the atmosphere or another space being controllable under the influence of the reversing member of the flash light apparatus in such manner that in moving the reversing member the communication to the first named space is made Wider or narrower.

This in its turn has influence upon the speed of motion of the flash light apparatus, as the movements of the diaphragm of the apparatus is dependentupon the more or less free communication between said airspace and the atmosphere or another space. Thus by connecting the reversing member to a rotatable disk or other valve means with a plurality of like or unlike ports which during the motion of said'reversing member alternately leave a larger or smaller passage open to the first named space, any desired time intervals of light and dark or series thereof can be obtained.

A form of the invention is illustrated in the accompanying drawing where- Figure 1 shows such a flash light apparatus in a vertical same in a horizontal section on the line a-b in Fig. 1. Fig. 3 is a vertical sectional view of a modified form of the device, and Fig. 4: is a horizontal section of the same.

The casing 1 of the apparatus is divided into two chambers 4:, 5 by means of a movsection and Fig. 2 the able wall 2 actuated by a spring 8, the former of said chambers being for the passage of the gas current while the latter preferably contains air. The chamber 4. thus has an inlet 6 and an outlet 7 for the gas, which are alternately opened and closed by a valve plate 8 provided with reversing members 9, 10, operated by the diaphragm by means of rods 11, 12.

According to the present invention the chamber 5 is in communication with a pipe conduit 14: which by a rotatable, tooth-ed valve disk 13 with a number of ports of different size can be put into intermittent or more or less free communication with the atmosphere. The toothed disk 13 is actuated by a metal pawl 15 which is so con nected to one of the reversing members 9, 10as to feed the disk forward step by step when the said reversing member is reciprocated.

As the movements of the diaphragm-besides depending upon the gas pressure in the chamber 4: and on the tension of the spring 3-obviously also depend upon the pressure in the chamber 5, it is clear, that when the communication between said chamher and the atmosphere is made narrow the movements will be retarded, and that by cutting off said communication the move ments may be stopped completely. By arranging the disk 13 so as to throttle the said communication after one, two or more strokes of the reversing mechanism 9, 10 and to leave it more free again after a cer tain number of further strokes, the speed of motion of the diaphragm and thus the frequency of the light flashes may obviously be increased or reduced at will.

Figs. 3 and t show, in a vertical and horizontal section respectively, a modification of the apparatus where instead of the valve disk 13 a usual lifting valve 16 is used, which is actuated by a cam disk 17. The teeth 18 of said disk are arranged in the same succession as the ports in the valve disk 13 above referred to, whereby the communication through the pipe 14L will be opened and closed in the same manner as in Figs. 1 and 2.

Having now particularly described the nature of my invention and the manner of its operation, what I claim is:

1. In automatic flash light apparatus, a

casing, a movable wall dividing said casing a the other chamber into two chambers, a gas valve connected to said wall and situated in one of said chambers, and another valve operatively connected to said wall and controlling a passage from the other chamber bounded by said movable wall.

. 2. In automatic flash light apparatus, a casing, a movable wall dividing said easing into two chambers, a gas valve in one of said chambers controlling an inlet and outlet therefor and operatively connected to said movable wall, a pawl and ratchet feed mechanism operatively connected to said movable wall and a valve connected to said feed mechanism, said valve controlling a passage from the other chamber of said casing.

8. In automatic flash light apparatus, a casing, a movable wall dividing said casing into two chambers, a gas valve connected to said wall and controlling an inlet and an outlet for one of said chambers, and another valve operatively connected to said wall and controlling a passage to open air from bounded by said movable wall.

l. In automatic flash light apparatus, a casing, a movable wall dividing said casing into two chambers, a gas valve connected to said wall and controlling an inlet and an outlet for one of said chambers, a pawl and 'atchet feeding mechanism operatively connected to said movable wall and a valve disk connected to said feeding mechanism, said valve disk having ports controlling the passage of air to and from the other chamber bounded by said movable wall.

5. In automatic flash light apparatus, a

casing, a movable wall dividing said easing into two chambers, a gas inlet and an outlet for one of the chambers, means associated with the movable wall for connecting the inlet and outlet chamber during movement of the said wall in opposite directions, and means operated by the first-named means for intermittently opening the other chamber to the atmosphere.

(5. In automatic flash light apparatus, a casing, a movable wall dividing the said casing an outlet for one of the chambers, means associatedwiththe movable wall for connecting the inlet and outlet alternately with said chamber during movement of the said wall in opposite directions, and means operated by the first-named means for intermittently alternately with the said into two chambers, a gas inlet and opening the other chamber to a greater or less degree to the atmosphere.

7. In automatic flash light apparatus, a casing, a movable wall dividing said casing into two chambers, a gas inlet and an outlet for one of the chambers, a valve movably mounted within the said chamber and adapted in one position to close the inlet and in the other position to close the outlet, reversing'means for the said valve connected operatively with the movable wall, and means operatively connected with the said reversing means for intermittently opening the other chamber to the atmosphere.

'8. In automatic flash light apparatus, a casing, a movable wall dividing said casing into two chambers, a gas inlet and an outlet for one of the chambers, means associated with the movable wall for connecting the inlet and outlet alternately with the said chamber during movement of the said wall in opposite directions, and a valve including a stationary member having a port communicating with the other chamber and other ports of varying sizes opening to the atmosphere, and a movable member operatively connected with the movable wall of the casing and having ports adapted to inter-connect the first-named port of the stationary member and different ones of the other ports of the same successively during movement of the movable member.

9. In automatic flash light apparatus, a casing, a movable wall dividing said easing into a valve chamber and an air chamber, a gas valve connected operatively with said wall and situated in the valve chamber, and another valve operatively connected to said wall and controlling a passage from the air chamber.

10. In automatic flash light apparatus, a casing having chambers, a diaphragm carried by the casing, a gas valve operatively connected to said diaphragm and controlling the gas supply through one of said chambers, and another valve operatively connected to the diaphragm and controlling communication of another chamber with the atmosphere.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANS J OHAN HENRIK RUSTIGE.

Witnesses:

BIRGER NORDIELDT, A. SIMON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, I). G. 

